The CDC actually revised their page about STDs and MSMs just a little earlier this month. It's worth a look:
Gay, Bisexual and Other MSM | STDs | CDC
Also, here's the CDC's page about vaccinations. The meningitis vaccine is just one of several that are recommended for MSMs. Be aware the recommendations are different for those who are HIV+ and those who are HIV-, as well as for those whose HIV may be at a different level. Look at the page but also talk with your doctor:
CDC - Vaccines - Vaccines Indicated for Adults Based on Medical and Other Indications Shell
Last thing -- but maybe most important -- is a page showing a comprehensive guide to CDC resources for health for MSMs. Take a look:
CDC - Gay and Bisexual Men's Health